Sorry, I forgot to mention that I replaced the spark plugs, wires, and distributor cap.

2000 Chevy Astro 110K miles 6 cylinder Trying to help my father in law repair his van. The car idles fine but stalls when you accelerate. So far we have checked the following which appeared to be fine: Fuel pressure, vacuum hoses, MAP, MAF, IAT, EGR, TPS (sensors were checked using the instructions ...